65,536 = 216 = 48 = 164 = 2562 also 2↑↑4=2↑↑↑3 using
Knuth's up-arrow notation, smallest integer with exactly 17 divisors, palindromic in base 15 (1464115), number of directed graphs on 4 labeled nodes[13]
65,539 = the 6544th prime number, and both 6544 and 65539 have
digital root of 1; a
regular prime; a larger member of a
twin prime pair; a smaller member of a
cousin prime pair; a
happy prime; a
weak prime; a middle member of a
prime triplet, (65537, 65539, 65543); a middle member of a three-term primes in arithmetic progression, (65521, 65539, 65557).
65,536 = 216 = 48 = 164 = 2562 also 2↑↑4=2↑↑↑3 using
Knuth's up-arrow notation, smallest integer with exactly 17 divisors, palindromic in base 15 (1464115), number of directed graphs on 4 labeled nodes[13]
65,539 = the 6544th prime number, and both 6544 and 65539 have
digital root of 1; a
regular prime; a larger member of a
twin prime pair; a smaller member of a
cousin prime pair; a
happy prime; a
weak prime; a middle member of a
prime triplet, (65537, 65539, 65543); a middle member of a three-term primes in arithmetic progression, (65521, 65539, 65557).